Is getting a t-mobile sim even worth e hassle for the free 200mb. I pay for Verizon on my ipad mini and am thinking to use the t mobile option on my ipad air, but I don't like hearing you pay then there are credits. This sounds like it leaves you open as soon as you go over they will bill. I don't want any contracts. Any body using the t mobile sim now for free with no agreement and it has been flawless? How is their LTE network compared to Verizon? I bought a Verizon ipad air. All thoughts and help are appreciated.